Update kind to release v0.21.0 (#104)

* update kind to release v0.21.0

Signed-off-by: cpanato <ctadeu@gmail.com>

* update readme

Signed-off-by: cpanato <ctadeu@gmail.com>

---------

Signed-off-by: cpanato <ctadeu@gmail.com>

README.md

@@ -15,13 +15,13 @@ For more information, reference the GitHub Help Documentation for [Creating a wo
 
 For more information on inputs, see the [API Documentation](https://developer.github.com/v3/repos/releases/#input)
 
-- `version`: The kind version to use (default: `v0.20.0`)
+- `version`: The kind version to use (default: `v0.21.0`)
 - `config`: The path to the kind config file
 - `node_image`: The Docker image for the cluster nodes
 - `cluster_name`: The name of the cluster to create (default: `chart-testing`)
 - `wait`: The duration to wait for the control plane to become ready (default: `60s`)
 - `verbosity`: info log verbosity, higher value produces more output
-- `kubectl_version`: The kubectl version to use (default: v1.26.4)
+- `kubectl_version`: The kubectl version to use (default: v1.28.6)
 - `install_only`: Skips cluster creation, only install kind (default: false)
 - `ignore_failed_clean`: Whether to ignore the post delete cluster action failing (default: false)
 

action.yml

@@ -6,9 +6,9 @@ branding:
   icon: box
 inputs:
   version:
-    description: "The kind version to use (default: v0.20.0)"
+    description: "The kind version to use (default: v0.21.0)"
     required: false
-    default: "v0.20.0"
+    default: "v0.21.0"
   config:
     description: "The path to the kind config file"
     required: false
@@ -28,9 +28,9 @@ inputs:
     default: "0"
     required: false
   kubectl_version:
-    description: "The kubectl version to use (default: v1.26.4)"
+    description: "The kubectl version to use (default: v1.28.6)"
     required: false
-    default: "v1.26.4"
+    default: "v1.28.6"
   install_only:
     description: "Skips cluster creation, only install kind (default: false)"
     required: false

kind.sh

@@ -18,9 +18,9 @@ set -o errexit
 set -o nounset
 set -o pipefail
 
-DEFAULT_KIND_VERSION=v0.20.0
+DEFAULT_KIND_VERSION=v0.21.0
 DEFAULT_CLUSTER_NAME=chart-testing
-DEFAULT_KUBECTL_VERSION=v1.26.6
+DEFAULT_KUBECTL_VERSION=v1.28.6
 
 show_help() {
 cat << EOF